Qidong, Jiangsu

Qidong 启东市
County-level city
Looking southeast on the city, with downtown at the upper left (2007)
Qidong Location in Jiangsu
Coordinates: 31°52′12″N 121°42′11″E / 31.870°N 121.703°E / 31.870; 121.703Coordinates: 31°52′12″N 121°42′11″E / 31.870°N 121.703°E / 31.870; 121.703
Country	People's Republic of China
Province	Jiangsu
Prefecture	Nantong
Time zone	China Standard (UTC+8)

Qidong is a county-level city under the administration of the prefecture-level city of Nantong in southeastern Jiangsu province, China. It is located on the north side of the Yangtze River opposite Shanghai and forms a peninsula jutting out into the East China Sea. It has a population of 1.12 million.

The center of the city is named Huilong Township. It also has a well-known fishing port called Lüsi town, named after Lü Dongbin, one of the eight immortals, who is said to have visited the place four times. Qidong's Qilong township was formerly a separate island in the Yangtze called Yonglongsha but now forms a pene-enclave on Chongming Island, most of which belongs to Shanghai.

The area of present-day Qidong was part of the East China Sea until the Han dynasty, when deposition from the Yangtze River began to form islands, notably including Dongbuzhou (t , s , p Dōngbùzhōu) at the site of present-day Lüsi. These developed until they became fully merged with the mainland during the Qing dynasty. Under the Republic, Qidong County was established in March 1928. By November 1989, it was considered urban enough to be labelled a county-level city instead.